Taxonomic-revision-2016
Guides
Neocallotillus elegans
Elegant Calloused Clerid
Neocallotillus elegans is a species of checkered beetle in the family Cleridae, originally described as Tillus elegans by Erichson in 1847. The species was transferred to the newly erected genus Neocallotillus in 2016 following a taxonomic revision that split the genus Callotillus into two genera based on morphological characters. It occurs across the southwestern United States, Mexico, and Central America.
Ocypodidae
Ghost and Fiddler Crabs
Ocypodidae is a family of semiterrestrial crabs comprising approximately 180 described species across 13 extant genera. The family includes two well-known groups: ghost crabs (genus Ocypode) and fiddler crabs (multiple genera including Leptuca and Minuca), plus the mangrove crabs of genus Ucides. Members are characterized by markedly unequal chelipeds in males, with the larger cheliped always exceeding carapace length. The family underwent substantial taxonomic revision in 2016, when the genus Uca was divided into 13 separate genera.
Xeropigo
Xeropigo is a genus of sac spiders in the family Corinnidae, first described by O. Pickard-Cambridge in 1882. The genus comprises 17 described species distributed across South America and the Caribbean, with the majority of species occurring in Brazil. Recent taxonomic revisions have significantly expanded the known diversity, with seven new species described from Brazil in 2016. The genus shows notable species richness in northeastern Brazilian states, particularly Piauí, Ceará, and Maranhão.